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Main Applications:
Main- and auxiliary hoist line on mobile-, truck-, and luffing jib tower
cranes. Often used as a single point line.
Important:
Because of the inherent design characteristic flaws (no matter who produces
the rope) Unirope does NOT recommended the use of this rope type.
Rope Characteristic:
8x19 Spin Resistant in essence is a regular 8-strand rope but with the
core twisted in the opposite direction. Although this provides some degree
of a spin-resistant feature, the draw back is that the small inner core
can not compensate for the torque created by the large outer strands.
The result is that this rope rotates around itself constantly twisting
and torquing the inner core.
To make things even worse: The inner strands cross under the outer strands
at a severe angle. At these cross over points severe notching takes place
causing the rope to break up from the inside.
However, the most important drawback is that when the rope is used with
one end allowed to rotate (single line application) or with one end attached
to a swivel the breaking strength WILL drop by between 35% to 50%! We
don't think that this is anywhere near to be described as a 'safe' use
of wire rope.
But, it's YOUR call. We know our competitors are selling this rope to
you and we are not living on an island in fantasy land unaffected by reality.
If you WANT it we will get it for you.
| 8x19 Spin Resistant is NOT rotation resistant or
non-rotating. |
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